Rated 4 out of 5 stars

The tool is useful and works fine.

I have to agree the schedule interface is mingled and can be simplified. Liking or not the interface is not a matter of personal taste, it's about making it linear and simple.

This review is for a previous version of the add-on (4.4.4). 

Rated 5 out of 5 stars

Love it! A feature request - if it let me set a default recur period, as i send everything weekly, which would require one less click

This review is for a previous version of the add-on (4.4.4). 

Rated 5 out of 5 stars

EDIT A great addon v4.4.4 now works with "Mnenhy" (which is the only addon which fixes the header up to TB38.1 on all my copies)

This review is for a previous version of the add-on (4.4.3). 

The incompatibility with Mnenhy is fixed in release 4.4.4.

Rated 5 out of 5 stars

Great add-on. Working on different timezones made my communication easier.

Just a feature suggestion:
Auto shutdown PC after all email are sent.

This review is for a previous version of the add-on (4.4.1). 

Rated 5 out of 5 stars

Just to say thank you for the hard work. I work for clients all around the globe with so many different time zones and this addon makes life so much easier. I use this addon for the past 2-3 years without any flaws. Works also perfectly together with Mail Merge.

I do like the interface, and all functionality is logic once you give it a try and play around a bit. Powerful addon!

This review is for a previous version of the add-on (4.4.1). 

Rated 5 out of 5 stars

Love it! A feature request: If I set up an e-mail to be sent regularly (daily/weekly/whatever), it would be nice to be able to give a stopping date.

This review is for a previous version of the add-on (4.4.1). 

I'll add it to my to-do list.

Rated 5 out of 5 stars

Thank you, this add-on makes my life a lot easier. I work late at night and don't want my clients getting emails at 3 am so I use Send Later to deliver emails to them during the normal workday. Works great, no issues, love it!

This review is for a previous version of the add-on (4.4.1). 

Rated 3 out of 5 stars

I like the functionality. But I dislike the weird design of the dialogue window. Please make it possible to use colours and fonts/font sizes according to current system settings. I believe, the dialogue could be redisigned to look a lot simpler.

This review is for a previous version of the add-on (4.4). 

Rated 4 out of 5 stars

This looked pretty good at first, but the interface of the schedule dialog could be much clearer. Instead of "send to outbox" and "send now", it should only have a "schedule for send" button. I clicked the "send now" thinking that would send it as a schedule message. An email just went out Friday night instead of Monday morning... Why have a true "send now" button when you wouldn't even use this addon's functionality when sending a regular, non-scheduled email?


--
reply to @jikamens

Okay, that makes sense. Thanks!

This review is for a previous version of the add-on (4.4). 

I have tried various different layouts for the prompt window, and no matter what I do, somebody complains. At some point all that's left to do is to find the interface design that seems to provoke the fewest complaints, and do my best to document it for the few people who are still confused.

I'm not sure how to make it more obvious than it is now -- the "Put in Outbox" and "Send Now" buttons are in an entirely separate box in the dialog, outlined in red, and the button for scheduling a message is labeled "Send Later at time(s) specified above" -- without making the interface more clunky rather than less.

I understand that some people do not find the interface entirely intuitive. That is why there's a user guide as well as detailed, explanatory tooltips that pop up when you hover over the buttons.

The "Put in Outbox" and "Send Now" buttons are there because people use them. "Put in Outbox" is necessary because when Send Later is installed, that button is the only way to put a message into the Outbox. "Send Now" is necessary because some configure their "Send" button to _always_ pop up the Send Later dialog, and they need the option when the dialog pops up of sending the message now rather than scheduling it for later.

Rated 5 out of 5 stars

As a graphic designer I often find myself working really late at night, and nowadays with the help of the smartphones if you send an email at 3 am it's very likely that you wake up your client, also if you send emails at late hours you can send the wrong impression that you are free to work at whatever time they desire, so in order to protect myself and the rest and peace of my clients I started looking for a way to send my emails early in the morning while I'm trying to get 5 hrs of sleep, and I found this amazing add-on, I'm in love with it, just today it help me sent 6 emails at 8 am while I was getting my beauty sleep, xD, download it and try it, you won't regret it!!

This review is for a previous version of the add-on (4.3.1). 

Rated 5 out of 5 stars

I really like the functionality, this addon provides. Works great. A big THANK YOU!

This review is for a previous version of the add-on (4.3.1). 

Rated 5 out of 5 stars

I use Mozilla Thunderbird 24.5.0.
Function "Send Later" was necessary.
IMHO developers Mozilla Thunderbird
it is necessary to add this possibility.
By means of "Send Later 4.2.3" I have solved this problem.
All works perfectly. Five stars from me

This review is for a previous version of the add-on (4.2.3). 

Rated 4 out of 5 stars

is great, but CMD + SHIFT + RETURN (in Mac is command, not control), is hard to remember and not very usable... an icon on the message menu would be great.

Thanks and keep up the great work,

JB

This review is for a previous version of the add-on (4.2.3). 

Rated 5 out of 5 stars

Thank you to the developer because this add-on is mandatory for my life. I routinely write messages at 2AM to be sent out during "normal business hours" later that day. I would need to stop using T-Bird if this extension were not available. Frankly I don't know what I would do because no other email client does what I need (Gmail isn't an option).

I haven't had any issues regarding "spamming" or multiple sends. I will update this review if I do. I only have SendLater check the drafts box every 10 or so minutes, however -- not every minute. I don't need to specify the exact time that emails need to be sent. Perhaps changing that default value might help?

I ran T-bird 2.0 for years, then two years ago switched to 3.1, and only a week ago switched to the latest version. I am wary of "upgrades" because my email system needs to be absolutely bomb-proof or I stand to lose a great deal of money. I used the Mail Tweaks "Defer" add-on for years which worked fine, but this seems to have more options and I'm looking forward to integrating it into my business and my life.

This review is for a previous version of the add-on (4.2.2). 

Rated 5 out of 5 stars

Fantastic! One of the best add-ons for Thunderbird!

This review is for a previous version of the add-on (4.2.2). 

Rated 5 out of 5 stars

Genial, habe schon ewig danach gesucht und jetzt gefunden, danke an den Entwickler und weiter so !!!!!
Greats from Berlin

This review is for a previous version of the add-on (4.2.2). 

Rated 5 out of 5 stars

Es una de las extensiones que mas uso, me permite escribir mails en cualquier momento y enviarlos cuando comienza el horario laboral, permite configurar botones por minutos o simplemente ingresar un dia y hora especifico. Hace mas de 1 años que lo uso y jamas me ha fallado.

This review is for a previous version of the add-on (4.2.0). 

Rated 5 out of 5 stars

Awesome!
So easy to use and you can't mess up !

Thnks!

This review is for a previous version of the add-on (4.2.0). 

Rated 4 out of 5 stars

This is something that simply works and works well! Just some improvements needed in the interface, but nothing really important. Donate! It deserves it! I did it :)

This review is for a previous version of the add-on (4.1.7). 

Rated 5 out of 5 stars

Nuff respect! This extension/add-on is exceptional. Works flawlessly so far. I can't send any $$$ unless you will take Jamaican dollars but if you ever come to Jamaica link me and I'll treat you to the best Jerk Pork and Chicken in the world! Thanks for the hard work it is sincerely appreciated.

This review is for a previous version of the add-on (4.1.7).