I use both on free tier and I am happier with PostMark.
I had several issues when sending to Microsoft (hotmail, msn, etc.) domains via MailGun because someone exceeded granted quota for outbound IP address and since then I balance outgoing emails using both.
As mentioned by others, MailGun support doesn't care much about queries from free tier users so I would go for PostMark if I had to pay (more intensive use) or recommend to someone.
I am sure it is much more effective (and expensive) to lobby, but regular citizens can't afford it. There is a long way to go and "considered for debate" is just the first step.
Change.org only guarantees that all data you have provided (including what you are not aware of) will be sold to highest bidder.
There is much better option in some countries if you want to change some law or government policy. For example, in the UK any British citizen or UK resident can create an online petition to be discussed in UK Parliament [1].
If a petition gets 10,000 signatures, the government will respond.
If a petition gets 100,000 signatures, it will be considered for debate in Parliament.
I used to have delivery problems (throttling errors caused by another customer) sending messages to Microsoft related domains (hotmail, msn, live, etc.) when using MailGun.
There was no progress at all when discussing this topic with MailGun's support so I created another account at PostMark [1] to choose provider depending on recipient's domain. No more problems when sending messages to Microsoft related domains.
Anyway, "silently discarded" sounds like you need to put in place DMARC reports [2] to troubleshoot what is going on there.
PS: I chose PostMark because I like its online documentation. Currently a happy customer, not affiliate at all.
At the beginning it was basically word of mouth and niche related forums on the internet.
Then I started reading about SEO and advertising. Organic search more or less work but I got almost no traffic from a couple of banners on related pages during few months. I didn't try advertising networks like AdWords.
I don't see big brands as my competition. I have partnered with some but I don't think they sell much on the internet (typically higher price tags) compared to full equipped city centre stores.
I am sorry I can't provide a reliable answer to this because my english based sites need more traction, but Google (GWT) does not complain as long as hreflang attributes are properly set.
TL;DR: entry level Virtual Private Server (VPS) per country.
Based on some SEO articles, I decided to go for Top Level Domains depending on target market (.es for Spain, .de for Germany, etc.) so I needed properly geolocated IP addresses for each country. Each server is around 10 USD/month making this approach affordable. I do all operations.
> How do you compare the similar products and aggregate them within your database? Unique identifies etc.
Each product is manually added (using self made web based template) into database basically because of custom description, picture and specifications. Similar products are linked based first on category and then using properties like weight and drop.
A.- I would also add "nofollow, noarchive" tags [1] to your X-Robots-Tag header:
- "nofollow" -> do not to follow (i.e., crawl) any outgoing links on the page.
- "noarchive" -> prevents Google from showing the Cached link for a page.
B.- I would specify in Search Console (former Webmaster Console) how should Google handle "query" parameter [2]
C.- Prevent those spam searches by blocking source IP address, User-Agents, combinations of both, etc.
Good luck!
[1] https://support.google.com/webmasters/answer/79812?hl=en
[2] https://www.google.com/webmasters/tools/crawl-url-parameters...