Blogtrottr provides a variety of schedules for you to choose from:
If your feeds support PubSubHubub, then you can expect to get an update within just a few minutes of a new item being posted.
PubSubHubbub is a protocol that allows interested parties to be notified almost immediately when new content is added to a feed, rather than having to wait for a periodic check. It's quickly gaining traction, and is already being used by Blogger, FeedBurner, FriendFeed, LiveJournal, WordPress and more, with plugins available for most other popular blogging software, so there's a good chance that some of your favorite feeds already support it.
Not to worry, we'll autodetect any available feeds from a website URL, and present you with a list you can choose from.
Simply go into your Account Settings page, edit the Email address field, and click the Update button at the bottom of the page.
We'll send a confirmation email to the new address - just follow the link within, and the change is complete.

Feed owners sometimes edit items after posting, and what you're seeing is a new email with the revised content.
Yes. Add this Blogtrottr bookmarklet to your favourites (by right clicking and selecting 'Add to favourites' or dragging it to your favourites toolbar), and when you're on a page that you want to follow with Blogtrottr, just click the bookmarklet.
A bookmarklet is a tiny program contained in a bookmark which can be saved and used the same way you use normal bookmarks.
Sure thing, just replace
email=prompt('Please%20enter%20your%20email%20address');
with
email='myemail@example.com';

Simply click here to add Blogtrottr to your Firefox feed readers.
If the feed supports
basic HTTP authentication, then yes - you can embed a username and password into a URL like this:
http(s)://username:password@server.domain.com/feedname.xml
This means of course that we'll have these credentials stored in plain text, and
while we won't reveal them to anyone it'd be a sensible precaution to use a
unique password, and not one that you use on other sites or services.
Unfortunately some services place strict limits on how frequently we can poll
them for updates.
Currently, restricted domains are:
Of course! Copy the code below, and replace http://yourfeed
with your feed URL.
<form method='post' action='http://blogtrottr.com'>
Your email: <input type='text' name='btr_email' /><br />
<input type='hidden' name='btr_url' value='http://yourfeed' />
<input type='submit' value='Follow this feed via email' />
</form>
You certainly can. Help yourself to a button, copy the code below, and replace
http://yourfeed with your feed URL.
<a href='http://blogtrottr.com/?subscribe=http://yourfeed'
title='Get this feed delivered by email'>
<img src='/images/icons/blogtrottr-16px.png' alt='Blogtrottr' /></a>
We only use your email address to send you feeds that you have subscribed to, although we may very occasionally use it to contact you if there's some kind of problem.
Here at Blogtrottr we hate spam as much as you, and so we will never sell, share, rent, or in any way disclose your email address to anyone else.